In this application, the temperature is being monitored via DPS Telecom's D-Wire Temperature Sensor (D-PK-DSNSR-12001.00101). Although analog temperature sensors are commonly available, the D-Wire Temperature makes it easy by means of "Plug 'n' Play" and allows you to daisy chain up to an additional 15 D-Wire sensors at a maximum length of 600 feet. Simply attach one end of the RJ11 connector to the D-Wire Sensor and another end to the D-Wire Port located on the unit (In this case, the D-Wire port is on the front of the unit). This way, you can save your analog channels for sensors that aren't D-Wire compatible.
You'll notice commercial power being monitored as well with the discrete Power Out Alert Sensor (D-PR-592-10A-00). This sensor uses 1 of the 16 discrete alarms and plugs into an AC wall outlet. This way, when commercial power is lost, you will automatically be notified of this event via email or SMS text alert.
Finally, we see the generator being connected to the NetGuardian M16 G2. Although sensors like the D-Wire Vibration Sensor (D-PK-DSNSR-12060.00100) can be used to monitor the generator, in this application, the control relay output from the NetGuardian M16 G2 will be used to turn it on using Derived logic. For example, if the Power Out Alert Sensor detects a commercial power failure, the unit will know to latch the relay to turn on the generator to provide power to the site.
You may also notice a T/Mon Master Station depicted on the drawing which automatically polls NetGuardians. In this case, if monitoring one site, the T/Mon isn't required as you will simply log in to the single unit for configurations and status checks. If monitoring multiple sites, a T/Mon (MINI G2, SLIM G2, or LNX depending network size) may be required, as logging into and configuring each individual unit may become tedious and time-consuming. You'll be able to view your entire network on one screen with the T/Mon. Also, the T/Mon has many features including alarm filtering and monitoring other devices with the one-time purchase of the appropriate software modules.
This is one of many common applications for DPS Telecom's gear. If you're concerned with monitoring other equipment or would like more information, please call 1-800-622-3314 or email firstname.lastname@example.org.
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